Proceedings of the IRE volume 37 number 5, May 1949.
IRE 1949, pp 466 - 592 inclusive, plus sep. numbered adverts. at front and rear. Whole issue in original wraps, as issue.
IRE 1949, pp 466 - 592 inclusive, plus sep. numbered adverts. at front and rear. Whole issue in original wraps, as issue.
The Institute of Radio Engineers, September 1958,pp 1571-1682 inclusive; Illustrations, Refrences.
American Telephone & Telegraph, July 1950; pp 295-468; illus, photos, references; light blue paper wraps.